Coating composition and coating panel

Abstract

A coating composition including an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and a melamine compound in an amount of about 5 weight percent to about 10 weight percent, where all weight percents are based on a total weight of the coating composition.

What is claimed is: 
     
       1. A coating composition comprising:
 an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; 
 an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and 
 a melamine compound in an amount of about 5 weight percent to about 10 weight percent, 
 where all weight percents are based on a total weight of the coating composition, and 
 wherein the melamine compound comprises a compound represented by the following Chemical Formula 7: 
 
       
         
           
           
               
               
           
         
         wherein, m is an integer from 1 to 100. 
       
     
     
       2. The coating composition as claimed in  claim 1 , wherein the epoxy resin and the isocyanate compound are reactive to form a urethane bond. 
     
     
       3. The coating composition as claimed in  claim 1 , wherein the epoxy resin comprises a bisphenol epoxy resin. 
     
     
       4. The coating composition as claimed in  claim 1 , wherein the epoxy resin comprises a compound represented by the following Chemical Formula 1: 
       
         
           
           
               
               
           
         
         wherein, n is an integer from 1 to 100. 
       
     
     
       5. The coating composition as claimed in  claim 1 , wherein the isocyanate compound comprises toluene diisocyanate, diphenylmethane 4,4′-diisocyanate, diphenylmethane 2,4′ diisocyanate, hexamethylene diisocyanate, bis (4-isocyanatocyclohexyl) methane, isophorone diisocyanate (IPDI), or a combination comprising at least one of the foregoing. 
     
     
       6. The coating composition as claimed in  claim 1 , wherein the isocyanate compound comprises an adduct of isocyanate. 
     
     
       7. The coating composition as claimed in  claim 6 , wherein the adduct of isocyanate comprises a compound represented by the following Chemical Formula 2, a compound represented by the following Chemical Formula 3, a compound represented by the following Chemical Formula 4, or a combination comprising at least one of the foregoing: 
       
         
           
           
               
               
           
         
         wherein, R 21 , R 22 , R 23 , R 31 , R 32 , R 33 , R 41  and R 42  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       8. The coating composition as claimed in  claim 1 , wherein the isocyanate compound comprises a compound represented by the following Chemical Formula 5: 
       
         
           
           
               
               
           
         
         wherein, R 51 , R 52 , R 53 , R 54 , R, and R 56  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       9. The coating composition as claimed in  claim 1 , wherein the isocyanate compound comprises a compound represented by the following Chemical Formula 6: 
       
         
           
           
               
               
           
         
         wherein, BL is a phenol group, an ε-caprolactam group, or a butanone oxime group; and R 57  is a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       10. The coating composition as claimed in  claim 1 , wherein the melamine compound further comprises a compound represented by the following Chemical Formula 8: 
       
         
           
           
               
               
           
         
         wherein, R 81 , R 82 , R 83 , R 84 , R 85  and R 86  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       11. A paint composition comprising:
 a coating composition in an amount of 100 parts by weight; and 
 a paint in an amount of about 5 parts by weight to about 10 parts by weight with respect to the 100 parts by weight of the coating composition, 
 wherein the coating composition comprises: 
 an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; 
 an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and 
 a melamine compound in an amount of about 5 weight percent to about 10 weight percent, 
 where all weight percents are based on a total weight of the coating composition, and 
 wherein the melamine compound comprises a compound represented by the following Chemical Formula 7: 
 
       
         
           
           
               
               
           
         
         wherein, m is an integer from 1 to 100. 
       
     
     
       12. A coating panel comprising:
 a base substrate; 
 a first coating film disposed on the base substrate and comprising a first coating composition; and 
 a second coating film disposed on the first coating film and comprising a second coating composition, 
 wherein the first coating composition comprises: 
 an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; 
 an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and 
 a melamine compound in an amount of about 5 weight percent to about 10 weight percent, 
 where all weight percents are based on a total weight of the first coating composition, and 
 wherein the melamine compound comprises a compound represented by the following Chemical Formula 7: 
 
       
         
           
           
               
               
           
         
         wherein, m is an integer from 1 to 100. 
       
     
     
       13. The coating panel as claimed in  claim 12 , wherein the base substrate comprises stainless steel. 
     
     
       14. The coating panel as claimed in  claim 12 , wherein the second coating composition is substantially the same as the first coating composition. 
     
     
       15. The coating panel as claimed in  claim 14 , wherein the second coating composition comprises:
 the first coating composition in an amount of 100 parts by weight; and 
 a paint in an amount of about 5 parts by weight to about 10 parts by weight with respect to the 100 parts by weight of the first coating composition. 
 
     
     
       16. The coating panel as claimed in  claim 12 , wherein the epoxy resin and the isocyanate compound are reactive to form a urethane bond. 
     
     
       17. The coating panel as claimed in  claim 12 , wherein the epoxy resin comprises a bisphenol epoxy resin. 
     
     
       18. The coating panel as claimed in  claim 12 , wherein the epoxy resin comprises a compound represented by the following Chemical Formula 1: 
       
         
           
           
               
               
           
         
         wherein, n is an integer from 1 to 100. 
       
     
     
       19. The coating panel as claimed in  claim 12 , wherein the isocyanate compound comprises toluene diisocyanate, diphenylmethane 4,4′-diisocyanate, diphenylmethane 2,4′ diisocyanate, hexamethylene diisocyanate, bis (4-isocyanatocyclohexyl) methane, isophorone diisocyanate, or a combination comprising at least one of the foregoing. 
     
     
       20. The coating panel as claimed in  claim 12 , wherein the isocyanate compound comprises an adduct of isocyanate. 
     
     
       21. The coating panel as claimed in  claim 20 , wherein the adduct of isocyanate comprises a compound represented by the following Chemical Formula 2, a compound represented by the following Chemical Formula 3, a compound represented by the following Chemical Formula 4, or a combination comprising at least one of the foregoing: 
       
         
           
           
               
               
           
         
         wherein, R 21 , R 22 , R 23 , R 31 , R 32 , R 33 , R 41  and R 42  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       22. The coating panel as claimed in  claim 12 , wherein the isocyanate compound comprises a compound represented by the following Chemical Formula 5: 
       
         
           
           
               
               
           
         
         wherein, R 51 , R 52 , R 53 , R 54 , R, and R 56  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       23. The coating panel as claimed in  claim 12 , wherein the isocyanate compound comprises a compound represented by the following Chemical Formula 6: 
       
         
           
           
               
               
           
         
         wherein, BL is a phenol group, an ε-caprolactam group, or a butanone oxime group; and R 57  is a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       24. The coating panel as claimed in  claim 12 , wherein the melamine compound further comprises a compound represented by the following Chemical Formula 8: 
       
         
           
           
               
               
           
         
         wherein, R 81 , R 82 , R 83 , R 84 , R 85  and R 86  are each independently a substituted or unsubstituted linear or cyclic hydrocarbon group having 1 to 30 carbon atoms. 
       
     
     
       25. A display device comprising:
 a display panel; and 
 a chassis protecting the display panel and comprising a coating panel, 
 wherein the coating panel comprises:
 a base substrate; and 
 a first coating film disposed on the base substrate and comprising a first coating composition, 
 
 a second coating film disposed on the first coating film and comprising a second coating composition, and
 the first coating composition comprising: 
 an epoxy resin in an amount of about 75 weight percent to about 80 weight percent; 
 an isocyanate compound in an amount of about 10 weight percent to about 15 weight percent; and 
 a melamine compound in an amount of about 5 weight percent to about 10 weight percent, 
 where all weight percents are based on a total weight of the first coating composition, and 
 
 wherein the melamine compound comprises a compound represented by the following Chemical Formula 7: 
 
       
         
           
           
               
               
           
         
         wherein, m is an integer from 1 to 100. 
       
     
     
       26. The display device as claimed in  claim 25 , wherein the display panel is a liquid crystal display panel. 
     
     
       27. The display device as claimed in  claim 25 , wherein the display panel is an organic light emitting diode display panel.